Improvement in car-axle boxes



E; L. COL'MAN. cAR-AXLEBOX.

No. 190,468, Patented Maya,1a77.

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ATTORNEYS.

rLPrEns. lmom-L THDGRAPMEn. WASHINGTON n c EDWARD L. COLMAN, 0FVANDALIA, MISSOURI.

IMPROVEMENT iN CAR-AXLE BXES.

Specification forming part of Letters Patent N 0. Mbdh, dated May 8,1'877; application liled October 30, 1876.

To all whom it may concern:

Be it known that I, EDWARD L. COLMAN, of Vandalia, in the county ofAudrain and State of Missouri, have invented a new and Improved.Axle-Box, of-which the following is a specification:

In the accompanying drawing, Figures l and 2 represent verticaltransverse and longitudinal sections, respectively on lines y y, llig.2, and :n x, Fig. l, of my improved axle- Similar letters of referenceindicate corresponding parts.

The invention relates to an improved earanle box, with anti-friction andself-oiling` devices; and consists of the journal revolving 1n anelongated box, which is made of a top and bottom section, secured bybolted face and back plates.

A number ot' friction-rollers pass around the journal and around aguide-channel below the same, taking up the oil by a bottom inlet fromthe outer box.

In the drawing, A represents the outer inelosing-box, on which thetruck-frame is supported, and contains an inner journal-box, thatconnects by a top groove, angles to the axle G, with a rounded-o' toprib, b, of the outer box. This admits the lateral motion of thejournal-box independ ently ot' the outer box or easing, so as to give acertain play to the truck without straining the bearings or supports ofthe same.

The journallbox is made ot' a top section, B1, and a bottom section, B2,ot' which the top section is arranged at such distance from theaxle-jonrnal that a space of suflcient size for the introduction 0f anumber of anti-friction rollers D is provided.

Below the journal is arranged an elongated guide-block, D', which isrounded oft' at the lower part, and placed at the same distance from thebottom section B2 as the journal from the upper section. Theanti-friction rollers D are thereby allowed to travel around the journaland around the guide-block, and then up again to the journal. The topand a, at right.

bottom sections Bl B2 are connected by side flanges d of the lowersection, resting on lips e of the top section. The rollers D areretained in the journal-box by means ot' i'ront and rear plates E E',that are applied by fastening-screws f to the top section, and by asquare bolt,f, passing` through the guideblock or partition D. Flangesgot' the front and back plates bear on the bottom section B2, and serveto support the same. The bottom section Bz has a central oil-inlet, h,at the lowermost part, through which the oil is fed to the rollers D.

The space between the outer and inner boxes is filled up with anysuitable packing that supplies the oil to the rollers, which carry it upto the journal, so as to lubricate the same and return the surplus oilto the packing' in the outer box. The supply ofthe required quantity ot'oil is thus kept up in economical and uniform manner in proportion tothe speed at which the axle revolves.

The rollers feed the oil, and are placed at Some distance from eachother on the top of' the journal, so as not to come in contact with eachother. They remain always at a certain distance, for as soon as one isforced down on one side a roller is coming` up on the other` side.

The anti-friction rollers diminish the friction of thejournal and feedthe oil in econoxn ical manner, so as to produce ear-axle box ofsuperior quality.

Having thus described 1nyin\-'ention, vI claim as new and desire tosecure by Letters PatentrIhe combination ot' the top block B1, aperturebottoni plate B2, side plates E, partition or guide-block D', and seriesoi' loose frietionrollers D with the external easin ,tg or box A andjournal, substantially as and for the purpose set forth.

E. L. GOLMAN.

W itnesses:

J AMES M. BOYDEN, W. (l. WILSON.

